apex/up

// Package logs provides logging utilities.
package logs

import (
    "os"

    "github.com/apex/log"
)

// Fields returns the global log fields.
func Fields() log.Fields {
    f := log.Fields{
        "app":     os.Getenv("AWS_LAMBDA_FUNCTION_NAME"),
        "region":  os.Getenv("AWS_REGION"),
        "version": os.Getenv("AWS_LAMBDA_FUNCTION_VERSION"),
        "stage":   os.Getenv("UP_STAGE"),
    }

    if s := os.Getenv("UP_COMMIT"); s != "" {
        f["commit"] = s
    }

    return f
}

// Plugin returns a log context for the given plugin name.
func Plugin(name string) log.Interface {
    f := Fields()
    f["plugin"] = name
    return log.WithFields(f)
}